QUANTIFYING UNCERTAINTIES IN THE SUSTAINABILITY EVALUATION OF CONCRETE MATERIALS CONSIDERING REGIONAL CHARACTERISTICS IN JAPAN

Nicole Alexis Kwan Vios, Michael Ward Henry, Joel Galupo Opon

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

In the evaluation of concrete sustainability, what constitutes "sustainable"to one region may vary from another. This often leads to methodological forms of uncertainties that makes the evaluation process more complex. As such, this paper aims to quantify the effect of uncertainties in the regional context on the sustainability evaluation of concrete materials. This is carried out by quantifying the regional context through establishing a weighting scheme and then integrating the obtained weights into the sustainability analysis of concrete materials in tandem with uncertainty analysis. Japan is used as a case study because although it relatively appears as a homogeneous country, its prefectures possess unique characteristics that may make the sustainability evaluation of concrete materials vary across prefectures. Cluster analysis is carried out in the 47 prefectures of Japan using a set of regional context indicators. Five clusters are identified with varying characteristics and these are translated into different weighting schemes. The established weights are used in the sustainability evaluation of concrete materials using multi-criteria decision-making analysis. The results showed that one mix is the most sustainable for four of the clusters and a different mix is the most sustainable for the remaining cluster. When uncertainty analysis is conducted, the effect of the weights in the sustainability evaluation is explained by examining the average scores of the concrete mixes and the variance of the scores across the five clusters. This investigation facilitated the understanding of how regional differences and the uncertainties associated with it impact the evaluation of concrete sustainability.

Original languageEnglish
Title of host publicationfib International Conference on Concrete Sustainability 2021
EditorsKaterina Sojkova, Petr Hajek, Ctislav Fiala
PublisherCzech Technical University in Prague
Pages631-637
Number of pages7
ISBN (Electronic)9788001069646
DOIs
Publication statusPublished - 2022 Mar 3
Eventfib International Conference on Concrete Sustainability 2021, ICCS 2021 - Prague, Czech Republic
Duration: 2021 Sep 82021 Sep 10

Publication series

NameActa Polytechnica CTU Proceedings
Volume33
ISSN (Electronic)2336-5382

Conference

Conferencefib International Conference on Concrete Sustainability 2021, ICCS 2021
Country/TerritoryCzech Republic
CityPrague
Period21/9/821/9/10

Keywords

  • Regional characteristics
  • sustainable concrete
  • uncertainty analysis

ASJC Scopus subject areas

  • Engineering(all)
  • Physics and Astronomy(all)
  • Applied Mathematics

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